Distributor plate



Nov. 17, 1931. w. T. HANNA DISTRIBUTOR PLATE Original Filed July 25, l924 2 Sheets-Sheet 1 WILLIAM T fiA/wvA,

Nov. 17, .1931. w. 'r. HANNA I DISTRIBUTOR PLATE Original Filed July 25, 1924 2 Sheets-Shee M M .6 n W m m. d

' Patented Nov. 17, 19231 UNITED STATES PATENT OFFICE W'IIII'LIIJLAIlll. HANNA, CINCINNATI, OHIO I DISTRIBUTOR PLATE Application filed July 25, 1924, Serial No. 728,274. Renewed July 8, 1928.

This invention relates to fuel distributor plates such as are used in connection with comotive stokers andthe like.

Heretofore it has been found that the fuel 6 distributor plate of a stoker will have the ends which are exposed to the heat in the fire box burned off after continued use.

An object of my invention is to provide a fuel distributor plate having means for pro- .40 tecting the same against the action of the fire box heat and at the same time avoiding impairment of the efliciency of such plate.

Another object is to provide means for the purpose stated which are simple and inexpensive in construction and operation.

Another object is to provide a device of this kind that will require no attention after it has been installed.

' These and other objects'are attained by the means described herein and disclosed in the accompanying drawings, inwhich:

Fig. l-isa cross sectional elevation of a locomotive fire door openin showing in elevation a distributor plate 0 my invention in an operative position therein.

Fig. 2 is a view on line 2-2 of Fig. 1,1ooking in the direction of the arrows.

Fig. 3 is a detail of a blast chamber member forming a feature of my invention.

Fig. 4 is a cross sectional'view taken in the direction of the arrows on line'4-4 of Fig.3.-

In locomotive structures it has been necessary to dispose the fuel distributor devices substantially within the firing door 0 ening of the locomotive and where such distributors suffered a relatively rapid destruction due to the intense heat in the fire box.

The distributor shown herein comprises a distributor plate 4 mounted at the bottom 5 of the fire door opening 6. A blast chamber 1 member? is superposed upon the distributor plate and. is instrumental in sorting and distributing the fuel which is disposed thereon by mechanism (not shown). Large pieces of fuel will ride upon the top of the tubular nozzles 8, drop upon the plate 4 and be projected therefrom through the agency of relatively strong blasts of steam issuingfromthe endsof the nozzles & The finer particles of fuel pass between the nozz1es'8 onto the plate have provided means for projecting jets of in my United States Letters Patent #984,662,

4 from whence they are blown by jets of steam of relatively weaker pressure issuing from a second series of nozz es'9. The blast chamber member 7 shown in Fi s. 8 and 4, is provided with a pair of charm ers 11 and 12 in 5 communication with the series of nozzles 8 and 9 respectively. Tubular extensions 13 and 14 are disposed at the rear of the blast chamber member-and serve as inletmembers co-operating with passages 15 and 16 for admittmg steam under pressure to the chambers 11 and 12 respectively.

In order to overcome the action of the heat in the fire box upon the distributor plate I as steam at various angles in a plane disposed below and substantially parallel to the bottom of the distributor plate 4. This is accomplished by positioning inlet extension members trunnions 13 and 14 slightly above the bottom 5 of the fire door 0 ening 6 and providing perforations 17 an 18 in each of said projections. The perforations 17 may be substantially at right angles to the axes of the inlet extensions while the perforations 18 are disposed at ngles toward the center of the distributor p ate 4 so that'when jets of steam are forced through the perforations there will be provided practically a solid blanket of steam under prssure'beneath the distributor plate. The blanket of steam is made complete and more effective because the dia onal jets of steam from perforations 18 stri 'e and intermingle with one another and also with the streams or jets from the perforations17. Thus it willfbe noted that the means for conducting the fuel to the diStribu-.- tor nozzles are at the same time utilized for projecting the blanket of steam beneath the distributor late so that the distributor plate is practica y insulated from the direct action of the heat in the fire box.

While I have disclosed a distributor late substantially'as shown in my United tates Letters Patent No. 1.497914, issued June 10, 1924, it will be readily apparent that practically the same means and operating upon the same principle, may be applied to other distributor mechanisms for example as shown issued February 21, 1911. In short, the essence of this invention lies in providing means for conducting steam or air under pressure to a plane below and immediately adjacent the exposed bottom of the distributor angles to the axes of such perforations; For

the angularly disposed perforations therefore, bosses or lugs 19 are provided with faces 20 in order that all jets of steam may be projected to equal advantage.

What I claim is:

1. In a device of the class described the combination with a fuel distributor plate, of a blast chamber member, and inlet means for admitting steam to the blast chamber member, said inlet means having perforations disposed at varied angles in a given plane for directing intermingling jets of steam beneath the distributor plate.

2. In a device of the class described the combination with a distributor plate having a face exposed to fire, of a blast chamber member having a pair of non communicating chambers therein and passages terminating in said chambers, and tubular extensions carried by the blast chamber member'for directing steam under pressure through the passages into the chambers in said member, the tubular extensions having perforations in the walls thereof for emitting jets of steam at various angles across the exposed face of the distributor plate whereby to entirely displace heated air from the exposed face of the distributor fire box. 3. In a fuel distributing mechanism the combination with a distributor plate having plate when operatively mounted in a a face exposed to fire, of a blast chamber.

member, tubular members disposed in align ment with the exposed face of the distributor plate, and lugs on the tubular members havmg flat faces disposed at various angles in planesperpendicular to the exposed face of the distributor plate, the said lugs having perforations extending therethrough at right angles to the aforementioned faces and communicating with the interior of the tubular member whereby steam under pressure in the tubular members will be projected in inter-' secting jets at various angles. in a plane substantially parallel with the exposed face of the distributor p1ate.

*4. The combination with a distributor having a plate normally exposed to fire, of means comprising perforate tubes for projecting intermingling jets of steam in substantial parallelism with the exposed face of the plate whereby a fire protective blanket of steam is maintained upon said exposed face of the plate for displacing heated air immediately eneath the plate.

5. In a device for protecting articles having surfaces normally exposed to fire, the combination of tubes for carrying steam under pressure mountedadjacent the exposed surfaces, and lugs carried by the tubes and having faces disposed at various angles to one another and in planes substantially perpendicular to the ex osed surface, the lugs and tubes havin a plurality of perforations therein dispose in a plane substantially parallel to the exposed surface, each perforation extending at substantially right angles to the face of its respective lug.

6. In a fuel distributing mechanism, the combination with a distributor plate having a lower face exposed to fire, of a blastchamber member having a pair of non-communicating chambers therein, said member having perforations therein for directing blasts of steam from the chambers over the top of the distributor plate for moving fuel .over said plate, tubular members disposed in a plane below the lower exposed face of the distributor plate and communicating one each with the noncommunicating chambers, lugs on said tubular inembers having flat faces disposed at various angles in planes perpendicular to the lower exposed face of the distributor plate, said lugs having perforations extending therethrough at right angles to the aforementioned faces and communicating with the interior of the tubular members for directing steam under pressure through said perforations whereby the jets of steam are adapted-to be deflected one b another adjac int the outer exposed edge 0 the distributor p ate.

,7. In a fuel distributing device the combination with a fire box ofa fuel distributing plate extending into the fire box and having its bottom face exposed to fire in the fire box, a blast chamber member having suitable perforations therein to direct the blasts for effecting movement and distribution of fuel over the distributor plate and into the fire box, and means for supplying steam under pressure to the blast chamber member, said means being disposed in a plane immedlately beneath the bottom face of the distributor plate and provided with perforations from which jets of steam are projected at various angles in a plane below and substantially parallel to the bottom face of the distributor plate and 'servin to efi'ect displacement of fire and heated a1r immediately beneath the distributor plate for protecting said plate.

8. In a fuel distributing mechanism the combination with a fire box and a fuel distributor plate projecting'into the fire,box above a bed of fuel, of means for directing constant jets of steam under pressure at variousangles in a plane beneath and parallel to the bottomface of the distributor plate for displacing heated air from the bottom face of the plate.

9. In a fuel distributing mechanism, the combination with a fire box and a fuel distributor plate projecting into the fire box above the bed 0 fuel, ofmeans for directing inter-mingling 'ets of steam under pressure in a plane beneat and substantially parallel to the bottom face of the distributor plate for blanketing the same from the heat from the bed of fuel.

10. In a fuel distributing mechanism, the combination with a fire box and a fuel distributing member in said fire b'ox having a surface normally exposed to the fire, of means for protecting said surface comprising tubes carrying steam under ressure mounted ad- 'acent the exposed sur ace, and lugs carried y said tubesand having faces disposed in planes substantially perpendicular to the 'exposed surface, the lugs and tubes havin a plurality of perforations therein directe to project intermrngling jets of blanketing steam in a plane substantially parallel to the exposed surface and between said surface and the fire. V

In testimony whereof, I have hereunto sub scribed my name this 17th day of July, 1924.

WILLIAM T. HANNA. 

